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Finding the Fourth Proportional to 525,892.60, 788,838.90 and 326,438.20

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Solution

The fourth proportional to 525,892.60, 788,838.90 and 326,438.20 is: 489,657.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,892.60 : 788,838.90 = 326,438.20 : x
  2. Step 2: Convert to fraction form
    525,892.60/788,838.90 = 326,438.20/x
  3. Step 3: Cross multiply
    525,892.60x = 788,838.90 × 326,438.20
  4. Step 4: Simplify right side
    525,892.60x = 257,507,150,605.98
  5. Step 5: Solve for x
    x = 257,507,150,605.98/525,892.60
  6. Step 6: Final answer
    x = 489,657.30

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.